九年级英语上册-Unit-3-Safety语法聚焦三导学PPT-冀教版.pptx

单击此处编辑母版标题样式,单击此处编辑母版文本样式,第二级,第三级,第四级,第五级,*,单击此处编辑母版标题样式,单击此处编辑母版文本样式,第二级,第三级,第四级,第五级,单元语法聚焦三,Unit 3,Safety,第1页,单元语法聚焦三,祈使句,Unit 3,Safety,第2页,教材典句,Look,at this yellow star,Brian and Jenny!,布莱恩、詹妮，看这颗黄色星星！,2.,Let,me get the ladder for you.,让我给你拿把梯子。,3.,Dont,stand on chairs.,不要站在椅子上。,单元语法聚焦三,第3页,4.,Be,careful with scissors and knives!,小心剪刀和刀子！,5.,Never,smoke because of much pressure!,永远不要因为压力大而吸烟！,单元语法聚焦三,第4页,语法探究,1.,定义,祈使句是英语中基本句型之一，用来表示提议、命令、请,求、警告、劝说、禁止等语气。祈使句主语普通为第,_,人称，通常能够,_,。为了使语气愈加客气或,缓解，可在句前或句末加上,_,一词。,二,单元语法聚焦三,省略,please,第5页,2.,组成,(1),祈使句必定形式普通以,_,动词或,_,动词原形开,始，也能够以动词,let,开始。,(2),祈使句否定形式普通在句首加,_,或,_,。,(3),以,let,开头祈使句：,必定句：,Let him come in.,否定句：,Dont let him come in.,或,Let him not come in.,单元语法聚焦三,实义,be,dont,never,第6页,(4),有些祈使句可用,No,开头，表示禁止。,No smoking,please.,请不要吸烟。,No photos!,禁止拍照！,单元语法聚焦三,第7页,3.,拓展,(1),祈使句反意疑问句,祈使句反意疑问句，若陈说部分是否定句，则附加问句只能,用,will you。,若陈说部分是必定句，附加问句既可用,will you，,也可,用,wont you。,lets,开头祈使句用于提出提议，包含对方，其附加问句用,shall,we。let us,开头祈使句表示征求对方许可，其附加问句用,will you。,单元语法聚焦三,第8页,Dont do that again,will you?,Go with me,will you/wont you?,Lets go,shall we?,Let us take an exam,will you?,(2),祈使句用于两个主要句型,“祈使句,and,表结果陈说句”用来叙述必定条件。,“祈使句,or,表结果陈说句”用来叙述否定条件。,单元语法聚焦三,第9页,注意,这两个句型都能够改写为,if,引导条件状语从句。,Work hard,and you will pass the exam.,(,If you work hard,you will pass the exam.),Work hard,or you will not pass the exam.,(,If you dont work hard,you will not pass the exam.),单元语法聚焦三,第10页,实战演练,.,单项选择,(,),1.,白银,Boys and girls,，,_ learning and have fun.,A,keep B,to keep,C,keeping D,kept,A,单元语法聚焦三,第11页,(,)2._carefully,please!Look at the road sign.There is a,school ahead.,A,Drive B,To drive,C,Driving D,Drives,单元语法聚焦三,A,第12页,(,)3._ patient with him,please.He is only three years old.,A,Dont B,Be,C,Is D,Does,单元语法聚焦三,B,第13页,(,)4.,渝北,_throwing those stones,please.,A,Stop B,Stops,C,Stopping D,Stopped,单元语法聚焦三,A,第14页,(,)5.,安徽,Hold your dream,，,_ you might regret,some day.,A,and B,or,C,but D,so,单元语法聚焦三,B,第15页,(,),6.,滨州,I want to be a teacher when I grow up.,Work hard,，,_ your dream will come true.,A,or B,but,C,though D,and,单元语法聚焦三,D,第16页,.,按要求完成以下各题,1.,达州,This warning sign tells us not to pick flowers.(,保持句,意基本不变,),This warning sign says“_ _ flowers”,2.,天水,Tell him the truth at once,or he will be angry.(,改为主,从 复合句,),_ _ dont tell him the truth at once,he will be angry.,pick/No picking,单元语法聚焦三,Dont,If,you,第17页,3.,天水,Let us go hiking,_ _,？,(,完成反意疑问句,),4.You should be relaxed.(,改为祈使句,),_ _,，,please.,5.Dont park here.(,改为同义句,),_ _,！,will,单元语法聚焦三,Be,relaxed,No,parking,you,第18页,